buttonwood vs platan

buttonwood and platan both are nouns.

Word	Noun	Adjective	Verb	Adverb
buttonwood	Yes	No	No	No
platan	Yes	No	No	No

As nouns, platan is a hypernym of buttonwood; that is, platan is a word with a broader meaning than buttonwood:

buttonwood: very large spreading plane tree of eastern and central North America to Mexico
platan: any of several trees of the genus Platanus having thin pale bark that scales off in small plates and lobed leaves and ball-shaped heads of fruits

Other hypernyms of buttonwood include plane tree, sycamore.

buttonwood (noun)	platan (noun)
very large spreading plane tree of eastern and central North America to Mexico	any of several trees of the genus Platanus having thin pale bark that scales off in small plates and lobed leaves and ball-shaped heads of fruits